Motion-picture projector stand



Nov;. 11, 1947. I

J. R. RODMAN ET AL MOTi'ON PICTURE PROJECTOR STAND Filed Sept. 5, 1946 2Sheets-Sheet l Nov. 11, 1947. J. R. RODMAN E AL MOTION PICTURE PROJECTORSTAND Filed Sept. :5, 1946 2 sheets-sheet 2 N mu PN Nq 1 (l WW5 Jam 62mmL.M60Z Z 2'19 MMSWS I Patented Nov. 11, 1947 zgsoszt "orificeMOTION-PICTURE PROJECTOR STAND John Robert Rodman and Lyman M. Collie,Chattanooga, Tenn.

Application September 3, 1946, Serial No. 694,559

This invention relates to supporting stands and more particularly to astand for supporting a motion picture projector.

It is an object of this invention to provide a stand for a motionpicture projector having a tripod base and a flat supporting surfacemounted above the base in such a manner that the supportingjsurface orbase plate may be tilted in any and all directions to properly level theprojector in operative positiori thereon.

Another object of this invention is to provide a stand of the kind to bemore specifically described hereinafter, having a tripod base, aprojector supporting member swivellably mounted above the base forrocking movement to any desired position, and screw stops carried by thebase engageable with the bottom of the flat projector supporting memberfor fixing the member in adjusted position.

Still another object of this invention is to provide a stand for amotion picture projector or the like, having a tripod base and a fiatprojector supporting member mounted on the base by a universal jointwhereby the projector may be' rocked to any desired position relative tothe base, and means for fixing the supporting member in selectedadjusted position.

Still another object of this invention is to provide a stand of thiskind having a base and tripod legs slidably engaging in the base wherebythe legs may be removed from the base for dismantling the assembledstand, the base having set screws engageable with the legs in theirassembled position for locking the legs therein.

With the above and other objects in view, our

invention consists in the arrangement, combina-' tion and details ofconstruction disclosed in the drawings and specification, and then moreparticularly pointed out in the appended claim.

In the drawings,

Figure 1 is a side elevation, partly broken away, of our stand,

Figure 2 is a front elevation, partly broken away,

Figure 3 is a vertical section taken on the line 33 of Figure 2, and

Figure 4 is a horizontal section taken on the line 4-4 of Figure 3.

Referring to the drawings, the numeral l designates generally a motionpicture projection stand constructed according to an embodiment of ourinvention. Heretofore stands of this type have been formed with an uppersupporting member fixed relative to the supporting legs, usually of thtripod type, wherein each of the 1 Claim. (Cl. 248-427) legs waspivotally connected to the base and any adjustment of the head wasaccomplished by either adjusting th length of the legs or changing theposition of one or more legs relative to the other legs and the head orprojector supporting member. Such an arrangement, when extensiveadjustment-was required, resulted in a precariously or flimsilysupported projector and in the case of slidable or telescoping legs,there always existed the possibility of one leg slipping out ofadjustment. The most desirable condition is to have a stand with fixedlegs, both in length and in their relation to the base, and having ahead swivellably supported on the base and means for locking the head ina selected position so that the center of weight is over the center ofgravity.

By constructing a stand in the manner hereinafter described, thisdesirable condition is obtained.

The stand In comprises a base plate I l to which are removably attachedtripod legs I2, a universal joint I4 carried by the plate II, and a flatprojector supporting head [5 carried by the universal joint [4. The baseplate II is supported in a horizontal position and is formed in agenerally triangular shape having downwardly and out wardly inclinedsockets I6 at each corner. The upper ends of the tubular legs l2 areslidably engageable in the sockets l6 and may be locked in position bythe set screws I'I carried by the sockets l6 frictionally engaging thelegs l2. Soft tips [8, which may be made of rubber or other suitablematerial, are carried by the lower ends of the legs l2 to hold the standagainst slipping.

The base plate H is formed with a pair of spaced apart apertured ears l9on the upper surface thereof at substantially the center of the psliatel I, and a pivot pin 20 is carried by the ears The universal joint I4 ispivotally secured between the ears IS on the pin 20. The universal jointor coupling member I4 is formed of an elongated inverted U-shapedchannel having closed apertured ends 2|. Midway the length of the memberHi there is provided a pair of downwardly extending apertured ears 22which depend from the opposite sides or arms 24 of the member l4 and areengaged by the pin 20 for rocking motion thereon.

The projector supporting member or head I5 is rockably carried by theuniversal joint M for rocking motion by a pivot at right angles to thepivot 20. The head 15 is formed of a flat surface having a peripheralbead or upstanding flange 25 about the upper side thereof to hold theprojector from sliding off the stand. On the lower side of the head l5there is fixed a downwardly extending frame formed of pairs of rightangularly related ribs 26, each of which intersects the adjacent ribsintermediate the length thereof. Pivot pins or screws 21 extend throughone pair of parallel ribs 26 engaging in the apertured ends 2| of themember I4 at, right angles to the pivot pin 20, whereby'tl iehead: f5 ispivotally secured to the base I I for universal movement.

To hold the head IS in a selected pivoted position, there are providedthree screws 28 which ex tend through the base I l, the-screws 28-havingqa knurled finger grip 29 on the lower end thereof. Two screws28, one on each side of the co'upling member I4, engage the lower end ofdownwardly extending bosses or stops 30? fixed. on thelower side of thehead l6, and one screw 28a, on the opposite side of the pivot 20 fromthe screws- 28 engages the lower side of the member I 4, whereby the.two screws 28 hol'dathe'head H: againstmovementabout-the pivot 21 andthe three screws-28 hold the-head I I a-gainst: movement about thepivcfizfl'.

In: the use and-operation ot the stand.- l0,'.- the projector rests onthe head H and maybe adjusted to anydesired position byrotating-, thescrews 28 and'i28a until=thaprojector is adjusted; the screws 28; one:on each' side ofthe pivot-21, when: turned: in' opppsitedirectionseffect rocking of thgheadll. about the pivot .21, and the screw 28a,when turned in a: direction opposite: from the screws28;.effectmovementofthe-head! I4! about themivot 2-0.

We do not mean to confine ourselves to the exact details of constructionherein disclosed, but claim all variations falling within the purview ofthe appended claim.

What we claim is:

In a motion picture projector stand comprising a base member, supportingmeans for said base member, a tiltable head, and a universalconnecttingmeans between said'zbase and said. head, said base formedwith a plurality of apertures therethrough about said connecting means,and adjustable screw threaded means projecting throughsaid:apertures=forengagement at their upper end with said head forsecuring said head in selected adjustedtilted" position, whereby thebase and head may be disposed in close proximity and thescrew'threaded-means may be disposed for access irrespective of therelative tilted position of the head and base.

JOHN ROBERT RODMAN. LYMAN- COLLIE.

REFERENCES CIT-ED The following referencesareof record in the fil'c of'this patent:

UNITED STATES PATENTS.

Number: Name Date":

11112935 Rial et gl. Oct. 6 I914 1,480,651 Bailey Jana 153-I924 1186389iZub'er June 21 1932

